Mailing List Archive

Thanks to Matt Domsch and Rezwanul Kabir at Dell, we know how to disable the MMC controller on the multi-function Ricoh R5C832. The MMC controller needs to be disabled or it will steal MMC cards from the SD controller where they would otherwise be supported by the Linux SDHCI driver.

> Thanks to Matt Domsch and Rezwanul Kabir at Dell, we know how to > disable the MMC controller on the multi-function Ricoh R5C832. The > MMC controller needs to be disabled or it will steal MMC cards from > the SD controller where they would otherwise be supported by the > Linux SDHCI driver. > > Signed-off-by: Philipl Langdale <philipl@overt.org> >

Patch looks ok. Please try to sort out that completely disabled controller that was reported first though.

This remains confusing. I went and investigated and the SD disable bit is 0x20. The one lspci dump from the IFL90 shows that 0x80 is set by default, but setting this on my laptop did not disable the SD controller. I will need to collect more information from owners to find out what's really going on.

> > This remains confusing. I went and investigated and the SD disable > bit is 0x20. The one lspci dump from the IFL90 shows that 0x80 is > set by default, but setting this on my laptop did not disable the > SD controller. I will need to collect more information from owners > to find out what's really going on. > > Do you want to wait on this before taking this patch? >

Preferably. But if you can't figure it out until it is time to merge things upstream, then I'll go with what we have right now.